schaer



- UNITED STATES PATENT I OFFICE.-

ARNOLD scHAER, OF iHENIX, RHODE ISLAND.

EVENER FOR RAILWAY-HEADS SPECIFICATION forming part of Letters Patent No. :287,585, dated October 30,1883;

` Application filed February 14, 1883. (No model.)

Heads and other Drawing-Machines, of which the following'is a full and correct description,`

reference being had to the accompanying drawings, forming a part of this specification. My invention relates to that class of devices, called eveners, 77 which are appliedto railwayheads, drawing-frames, &c., for the 'purpose of correcting the inequalities of the sliver while passing through 'said railway-heads.

The meehanism is'illustrated in the acconpanying drawings, in which- Figure l is a front elevation of so much of a railway-head as is necessary to show my invention, certain parts being in section. Fig. 2 showsa vertical section of the same, taken through the line x x, Fig. 1. Fig. 3 shows more fully the eonnecting mechanism between the 'drawing-rolls, cones, and evening devices.

C is the frame of the railway-head: J' is the nain shaft. b' is a pulley-fast on shaft J and drives the pulley c' by means of the belt o'. A' gear-wheel, d', 011 the pulley c' engages in the gear-wheel# on the back roll, S, which drives the second roll, S', by means of an intermediate gear-wheel, h', which engages in gear-wheels on both of the rolls. These' gearwheels are shown by broken lines in Fig. 3.

The roll b, which is used for the evener, is driven at the same speed as the back roll, S, by the gear o", meshing into the gear 2/ on the back roll, S. All the parts mentioned maintain a uniform rate of speed when in operation, and a uniform draft is produced between the rolls S and SC The variations made; in the drawing by the evener take place between the roll S' and the roll d in the space indicated by the dotte'd line 1-'. The rolls d d" are driven by the gear e K' on themain shaft J', which meshes into the gear l' on the cone J, from which the upper cone, K, is driven by the belt m'. A geari wheel, n', fast on the shaft of the cone K,

drives the front roll, d", by means of the intermediate gear-wheels, 0 and m', and anjintermediate gear-wheel, b, drives the roll d. V The calender-rolls z e" .are'driven by the intermediate gear-wheel, y, which engages in the gear-wheel on the roll d". By shifting the belt m' on the cones Kand J the speed of the front rolls, d d", are lessened or increased, and less or more draft is produced at the line r', as may be determined by the evener.

The belt-shipper' is attached to the carriage 'i', which slides on the rod j. Two pawls, Z l, having friction-rolls on their undersides, are pivoted to the same carr-age, and also the segment m and the two grooved rolls 1' r, that support the rack-bar s. The segment m is also balanced on its stud, and has an arm prow jecting down from its lower side. The curved sides of the segment 'm are so shaped as to hold up the friction-rolls on the pawls 'Z l and keep the pawls clear of the teeth of the rack s. When the arm on the lower side of the segment is vertical, and upon any deviation from that position, either to. the right or left, one of 'the pawls will fall into the space at the top of the segment and catch in the teeth of the rack s. This rack s receives a reciprocating motion endwise from the grooved cam t and is supported by the grooved rolls r r on the carriage t", and when the carriage is moved clear up to the right the left end of the rack is held up by the lever s'. I

Four pressers, e e e e, are placed under the roll b, being pivoted on the rod e' and pressed upagainst the sliverof cotton a', that passes between 'them and the roll b, by aset of yokes, n n', one of each of the two outside yokes,\ n, hearing by its two ends ontwo of the pressers e, and the center yoke, n', bearing with its ends on the centers of the two yokes n n. The yoke n' is supported at iscenter by the rod p, which has its lower end resting on the lever p', which has its fulcrum at one end attachedto the frame, and its free end resting on the lever g: The lever g is balanced, and has its fulcum between the' bearing of the lever 1)' and its free end,

which is connected by the link g' to the hori-` IOO or thiner than it should be in any part of its width, the presser over which that portion passes will be moved to or from the roll b, and this motion of the presser will be conveyed by the yokes' n', rod p, lever 1)', lever (j, and link g' to lever IL, the lower end of which is connected by the rod v to the Vertical arm of the segment m, which will be defiected to one side, so as to allow one of the friction-rolls on the pawls to drop into the space at the top of the segment. This allows the pawl to which that roll is attached to catch in the teeth of the rack s, which has, as before stated, a reciproca-ting motion that will move the carriage i' tooth by tooth until the segment-arm is again in a Vertical position, when the pawl will be lifted from the rack by the curved side of thesegment, and the carriage will remain stationary at that point until the arm of the segment is again deflected in the opposite direction by the sliver of cotton resuming its proper thickness. As the carriage is moved to one side, it moves the belt z' on the cones J K, thereby inereasing or dininishing the speed of the rolls d d, and changing the amount of draft at 7- to counterbalanee the change in the thickness of the sliver that caused the movement.

The difficuity with eveners has hitherto been that the movement of the belt on the cones, started by a change in the sliver, does not stop when a sufficient change in the draft has been made, but will continue so long as the sliver runs too thick (or too thin) and make too great a change in the draft, thereby producing a defect of the opposite kind in the siiver delivered. This is obviated by my arrangement of the segment and pawls, whereby the novement of the belt on the cones stops as soon as a sufficient change in the draft has been made, and keeps the draft at that point so long as the sliver entering does not change still more or return to its former size.

Having thus described my improvments, what I claim as my invention is- The combination of the carriage i', pawls ll, grooved rolls r r, segment m, rack s, and cam t with the shipper i, cones J K, and mechanisn connecting the same with the roll I and pressers c e, substantially as set forth.

ARNOLD SCHAER XVitnesses:

S. HORACE WHEELER, E. G. CAPWELL. 

